Belt.



V. H. JENNINGS.

BELT.

APPLICATION FILED D110. 5, 1910.

Patented Aug. 13, 1912.

UNITED sTATs PATENT oFFIcE.

VICTUR H. JENNINGS, OF WORCESTER, MASSACHUSETTS, ASSIGNOR T0 MILLS WOVEN CARTRIDGE BELT C0., OF WORCESTER, MASSACHUSETTS, A CORPORATION 0F MASSACHUSETTS.

To all whom it may concern.'

Be it known, that I, VICTOR H. JENNINGS, a subject of the King of Great Britain` residing at Worcester, in the county of Worcester and State of Massachusetts, have invented new and useful Improvements in Belts, of which the following is a specification.

This invention relates to improvements in belts, and particularly to a woven fabric belt having a portion of its extent of a different thickness than the other portion thereof, and the object is to provide a beltof this character having a smooth, continuous and unbroken surface on its outer face, and an improved method of weaving the same.

With the above object in view, the invention consists in the novel features of construction hereinafter fully described, particularly pointed out in the claims, and clearly illustrated by the accompanying drawing, in which- Figure 1 is an edge view of a portion of a belt woven in accordance with my invention; Fig. 2, a face View of a portion of the belt showing the inner face before cutting off the floating threads, and Fig. 3, a diagrammatic view showing the method of weavin the belt.

The lnvention relates to belts or other articles of woven fabric where it is desired to form the same of two different thicknesses. This may be done by disassociating the threads of one or more plies, While the other lies are being woven into a solid fabric. gbr example, there may be two plies running one above the other and bein bound by the loom into a single compact abric. One of these plies produces the face of the belt or other article, and the other ply the back. It is ordinarily desired that the face of the belt or fabric shall be as smooth as possible,`

producing a continuous and unbroken surface. It is possible at the desired point to drop out the threads of the back ply and continue the weaving only of the front ply, but in practice this does not roduce the smoothness of appearance desired on the front face of the belt. My invention enables me to produce such desired smooth Surface by substituting, in the process of BELT.

Patented Aug. 13, 1912.

Serial No. 595,773.

weaving, the back warp for the front warp at the point where the thinner portion of the fabric begins.

In carrying out my invention, I weave the desired length of fabric having t-he greatest number of plies. I then pass the back or lower warp 1 throuch the front or up er warp 2 at the point and weave a num r of picks in the form of a tubular section B, the front, or upper warp 2, or top wall of the pocket, if a pocket 1s being Woven, becoming the lower ply of the tubular section, and the lower warp l or back wall of the pocket, forming the upper ply of the tubular section.r This is done to enable me to se: cure a neat finish at the point where the fabric is reduced from a greater number of plies to a less number.

After the necessary number of picks of the tubular section have been woven, I drop the threads of the upper warp 2 which forms the lower ply of the tubular section, and weave the back or lower warp l, which forms the upper ply of the tubular section, in the form of a single-ply fabric 3.

The reason for substitutin the lower warp or back wall of the fabric, or pocket, for the upper warp or front wall, to produce the thinner portion, is that the warp which forms the back wall usually carries a greater amount of tension in the loom, thus giving a much stronger and firmer fabric than is obtainable from the warp which forms the upper wall of the pocket.

I have illustrated a belt having pockets, but my invention is not limited thereto, as plain belts of two thicknesses, that is belts without pockets, may also be woven inaccordance therewith. Where pockets are provided they may be either with or without integrally woven partitions. Where oekets are woven having partitions, as illustrated, in passing from the weaving thereof to the single-ply portion, the threads of the partition or center -wall 4 are carried through the tubular section as floating or dead threads, that is, threads that are not interwoven with surrounding threads, and these threads are drop ed with the threads comprising the lower lJy of the tubular section, and'in the finis ing process they are cut off .with the latter.

After weaving the desired number of pockets, I may weave a few picks of tubular section, using the upper warp or top-ply of the pocket for the upper ply of the tubular section, and the lower warp or backply of the pocket for the lower-ply thereof, the threads of the partition warp being carried as dead threads. After the necessary length of tubular section has been woven, I may raise the threads of the upper warp and partition warp and weave as a single ply, the'lower warp, or back wall of the pocket only.

It should be noted that, as any ofthe single plies of the fabric is much lighter than the portion of the belt composed of several plies, it may be desirable to give additional stiffness thereto, and for this pur! pose I sometimes employ in that portion of the fabric which consists of a single ply, a filling or weft thread of much heavier or harder yarn than the llingused in forming the portion of the belt composed of several plies, or I may make the warp threads which form the partition wall of the pocket of yarn much heavier or harder than the yarn composing the warp of the other plies ofthe fabric, and this partition warp may then be used to produce the single fabric, the upper and lower warps on either side of it being dropped. InV following this method,

I would Weave the same as hereinbefore described until I conclude the weaving of the tubular section, then that part of the center warp which has been carried as dead threads through the tubular section is entered by the weft, which begins to form from it, the

single ply fabric, while, at the same time, the lower and upper warps are dropped and their threads carried as floating threads to be cutoff in the finishing of the fabric.

The tubular section produced in any of the methods of weaving described, is formed for the purpose of affording a means of neatly finishing the belt at the point where the floating threads are cut away. These floating threads having been sheared off where they 'project from the tubular section, the latter may then be turned inward upon itself and stitched orl otherwise fastened.

This conceals all loose threads or raw edges and prevents unraveling.

The production of the tubular section may not always .be necessary, in which case it may be omitted, and the threads of the dropped warp sheared away close to the point at which they emerge from the main fabric.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

l. A multiply fabric of different thicknesses having the thinner portion formed of the lower or back warp of the thick portion and extended as a continuation of the front ythe thinner portion of which is formed by carrying the threads of one or more plies forming the thicker portion as floating threads and severing thesame from the fabric, said fabric being formed with a tubular portion at the juncture of the thin and thick portions, the edge of which .is turned in and united to the fabric after the floating threads are cut off.

4. The improved method of weaving a fabric of different thicknesses, consisting in weaving a portion having the greater number of plies, then weaving a tubular section,

then Vweaving the portion of the fabric containing the lesser number of plies, and finishing the fabric by cutting of the threads not used in weaving the thinner portion and uniting the tubular section at its open edge to the fabric.

5. The im roved method of weaving a fabric of different thicknesses, consisting in weaving a portion having the greater number of plies, then passing'the back warp through the upper warp, and then weaving a tubular section, then weaving the portion of the fabric containing the lesser number of plies using said back warp, and finishing the fabric by cutting ofl' the threads not used in weaving the thinner portion and unit-ing the tubular section at its open edge to the fabric.

6. rI`he improved method of weaving a fabric of different thicknesses, consisting in weaving a portion containing the greater' open end to the fabric.

7. The improved method of weaving a fabric of different thicknesses, consisting in weaving a portion containing the greater number of plies, then weaving a tubular portion with the use of some of the plies forming the thick portion and carrying the.

threads of the other plies therethrough as dead threads, then weaving the thin 'portion with the threads forming a ply or plies of the thick portion, and then finishing bycuttlng out the threads not used in weaving the thin portion and uniting the open edge of tions, and finishing by severing the threads the tubular port-ion to the fabric. not used in weaving the thinner portion and 8. The improved method of weaving a. then uniting the open ends of the tubular fabric having different thicknesses, consistportions to the fabric. 3 ing in Weaving the portion having the In testimony whereofI uix my signature j@ greater number of plies, then weaving the in the presence of two Witnesses.

thinner portion by extending the intermedi- VICTOR H. J ENNINGS. ate ply or plies and Weaving the other ply Witnesses: v or plies on each side thereof at thefjuncture GERTRUDE A. QUINN,

10 of the thicker portion to form tubular por- HERVEY L. WOODWARD. 

